by Ron Goldenberg
For those of you interested in music theory I would recommend that you try the website
It’s not only written in an easy-to-follow format, but it is also extremely well done with examples and pictures. Topics range from notes, rests, time signatures and key signatures to intervals, chords/triads all the way to chord progressions and more complex topics. There is something for everyone at any level of experience.
And best of all …….. it is FREE!!